CVE-2026-13074

Awaitable Hello Command in Exhaust Mode Unthrottled Response Loop Leading to Denial of Service

CVE-2026-13074 is fixed in MongoDB on 1 platform by MongoDB 8.3.7 (version 8.3.7), released June 11, 2026. It is not reported as exploited. Patch Radar priority: Routine.

Routine

CVSS

6.9

No vendor severity

Exploitation

None reported

No vendor assessment

CISA KEV

Not listed

Not in the Known Exploited Vulnerabilities catalog

EPSS

0.0044

38th percentile

An unauthenticated remote client can cause excessive CPU consumption on a MongoDB server by sending a specific combination of parameters to the awaitable hello command in exhaust mode. The server's handling of this combination results in a response loop that bypasses normal throttling, allowing a small number of connections to degrade server availability.

Where it's fixed

Product	Fixed in	Fix	Released
Windows apps
MongoDB	8.3.7	MongoDB 8.3.7	Jun 11, 2026

Details

Published
July 22, 2026
Weakness
CWE-770: Allocation of Resources Without Limits or Throttling
Vendor advisory
https://nvd.nist.gov/vuln/detail/CVE-2026-13074

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